Honeywell NXL user manual Cabling and connections Honeywell, Control terminal signals

46(96) Cabling and connections Honeywell

6.2.5Control terminal signals

	Terminal	Signal	Technical information
1	+10 Vref	Reference voltage	Maximum current 10 mA
2	AI1+	Analogue input,	MF2-MF3: Voltage input
		voltage	MF4-MF6 Selection V or mA with jumper block X8 (see
		(MF4 and bigger: voltage or current)	page 39):
			Default: 0– +10V (Ri = 200 kΩ)
			0– 20mA (Ri = 250 Ω)
3	AI1–	Analogue input common	Differential input if not connected to ground;
			Allows ±20V differential mode voltage to GND
4	AI2+	Analogue input, voltage or	Selection V or mA with jumper block X4(MF2-MF3) and
		current	X13 (MF4-MF6)
			Default: 0– 20mA (Ri = 250 Ω)
			0– +10V (Ri = 200 kΩ)
5	AI2–	Analogue input common	Differential input;
			Allows ±20V differential mode voltage to GND
6	24 Vout	24V auxiliary output voltage	±10%, maximum current 100 mA
7	GND	I/O ground	Ground for reference and controls
8	DIN1	Digital input 1	Ri = min. 5kΩ
9	DIN2	Digital input 2
10	DIN3	Digital input 3
11	GND	I/O ground	Ground for reference and controls
18	AO1+	Analogue signal (+output)	Output signal range:
19	AO1–/GND	Analogue output common	Current 0(4)–20mA, RL max 500Ω or
A	RS 485	Serial bus	Differential receiver/transmitter, bus impedance 120Ω
B	RS 485	Serial bus	Differential receiver/transmitter, bus impedance 120Ω
30	+24V	24V auxiliary input voltage	Control power supply backup
21	RO1/1	Relay output 1	Switching capacity:	24VDC/8A
22	RO1/2			250VAC/8A
				125VDC/0,4A
23	RO1/3
			Relay output terminals are galvanically isolated from the
			I/O ground

Table 6-9. Control I/O terminal signals

NOTE! NXL HVAC additional inputs terminal signals defined in section 11 NXLOPTAI

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